a-a aaa aaf aam aan aap af- afa aff afm afn afp ama amf amm amn amp an- ana anf anm ann anp ap- apa apf apm apn app faa faf fam fan fap ffa fff ffm ffn ffp fma fmf fmm fmn fmp fna fnf fnm fnn fnp fpa fpm fpn fpp m-f maa maf mam man map mfa mff mfm mfn mfp mma mmf mmm mmn mmp mna mnf mnm mnn mnp mpa mpf mpm mpn mpp naa naf nam nan nap nfa nff nfn nfp nma nmm nmn nmp nna nnf nnm nnn nnp npa npf npm npn npp p-p paa paf pam pan pap pfa pff pfm pfn pfp pma pmf pmm pmn pmp pn- pna pnf pnm pnn pnp ppa ppf ppm ppn ppp